Improved apparatus for tempering steel



thtitmitste ,time Gettin.

Letters Patent No. 97,(554, dated November 23, 1869.

IMPROVED APPARATUS FOR TEMPERINGSTEEL.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may conce/rn Be it known that I, C. B. GOTTRELL, of Westerly,

in the county of asshingtom and State ot' Rhodev Island, have invented a new and improved Apparatus for Tempering Steel; and I do hereby declare Vthat the tbllowing is a full, clear, and exactdescrip-- tion thereof, which will enable others skilled in the art to make and use the same, ret'erence being had to the accompanying drawing, tbrming partot' this specification.

liignre'l represents a vertical central section of my improved apparatus, showing it put up for operation.

Figure 2 is a'side v-iew, partly in section, of the same, showing the basket and hood taken out, after the heating-process is completed.

Similar letters ot' reference indicate corresponding parts.

This invention relates to an improvement on the apparatus for tempering steel, for which Letters Patent ot' the United States, No, 55,004, were granted to me on the 22d day of May, 1866.

The present invention consists in the application to the aibrcsaid'apparatus ot'a cylimlricnl hood, A, which is open at the lower end and closed on top, and which can be titred upon the vessel n, containing the tallow, oil, or other oleaginous tempering-mcdium, after the basket or perbruted vessel (I, containing tllearticles to be tempered, has ybeen introduced in thesame.

A hook, B, is introduced, through au aperture in the top of the hood, for the .purpose of engaging the bail e of the basket, and for lifting the basket (l, with its contents, out ot' the temperiiig-liquid, allowing them to drain before removing the hood.

rlhe operation of tempering is the same as described iu the aforesaid Letters Patent.

\Vhen the thermometer findicates that the requisite degree of temperature has been reached, the hook is raised, and the basket is elevated within the hood, above the vessel (L.

After the basket and contents have sutiiciently drained, they are removed from the vessel d with the hood, and then the cover b is quickly applied to the, vessel, before any combustion ot' the heated tempering-medium can take place.

' Having thns described my invention,

I claim as new, and desire to secure by Letters Patentl. The employment ot the hood A in connection with a tempering-apparatus, substantially as and for the purpose herein shown and described.

2. lhc combination ot' the liood'A and basket (l, substantially as and for the purposes herein shown and described.

C. B. COTTR-ELL.

fitnessesz Guo. W. Manne, ALEX. F. Romnvrs. 

